Black powder flowing with hydrocarbons in a hydrocarbon pipeline is converted into a magnetorheological slurry by implementing wet scrubbing in the hydrocarbon pipeline. A flow of the magnetorheological slurry through the hydrocarbon pipeline is controlled.

Black powder flowing with hydrocarbons in a hydrocarbon pipeline is converted into a magnetorheological slurry by implementing wet scrubbing in the hydrocarbon pipeline. A flow of the magnetorheological slurry through the hydrocarbon pipeline is controlled.

Black powder flowing with hydrocarbons in a hydrocarbon pipeline is converted into a magnetorheological slurry by implementing wet scrubbing in the hydrocarbon pipeline. A flow of the magnetorheological slurry through the hydrocarbon pipeline is controlled.

Black powder flowing with hydrocarbons in a hydrocarbon pipeline is converted into a magnetorheological slurry by implementing wet scrubbing in the hydrocarbon pipeline. A flow of the magnetorheological slurry through the hydrocarbon pipeline is controlled.

A method for inhibiting corrosion in pipelines for transporting oil and gas is described. A nano-machine is fed along with an inert gas to the pipeline to deliver a corrosion inhibitor which is chemically bonded to the nano-machine. The nano-machine is made by attaching a corrosion inhibitor to a nanoparticle by way of a covalent bond. When the nano-machine encounters a source of corrosion in the pipeline, the corrosion inhibitor is released to treat the corrosion.

A method for inhibiting corrosion in pipelines for transporting oil and gas is described. A nano-machine is fed along with an inert gas to the pipeline to deliver a corrosion inhibitor which is chemically bonded to the nano-machine. The nano-machine is made by attaching a corrosion inhibitor to a nanoparticle by way of a covalent bond. When the nano-machine encounters a source of corrosion in the pipeline, the corrosion inhibitor is released to treat the corrosion.

An improved insertion tool for placing/removing objects in a pressurized vessel, the object mounted on an elongate object-holder of a tool attached to the pressurized vessel, the insertion tool including (a) one or more elongate guides each having a distal end and a proximal end, (b) a retractor assembly attached to the proximal end of the elongate guides, (c) a top-plate assembly attached to the distal end of the elongate guides, and (d) a travel-plate assembly slidably mounted to the elongate guides and configured to be attached to the elongate object-holder and moved along the elongate guides by the retractor assembly, the improvement comprising: the retractor assembly includes a removable link block configured to be removably attached to a body of the connection tool, the link block configured to thereafter be removably mounted in the retractor assembly with no degrees-of-freedom of movement while mounted in the retractor assembly.

An improved insertion tool for placing/removing objects in a pressurized vessel, the object mounted on an elongate object-holder of a tool attached to the pressurized vessel, the insertion tool including (a) one or more elongate guides each having a distal end and a proximal end, (b) a retractor assembly attached to the proximal end of the elongate guides, (c) a top-plate assembly attached to the distal end of the elongate guides, and (d) a travel-plate assembly slidably mounted to the elongate guides and configured to be attached to the elongate object-holder and moved along the elongate guides by the retractor assembly, the improvement comprising: the retractor assembly includes a removable link block configured to be removably attached to a body of the connection tool, the link block configured to thereafter be removably mounted in the retractor assembly with no degrees-of-freedom of movement while mounted in the retractor assembly.

A polymer composition has been developed that provides low viscosity oil-in-water polymer emulsions that release the polymer in the emulsion at a faster rate and without an additional surfactant when the emulsion is added to a hydrocarbon stream. Use of a temperature-sensitive emulsifying surfactant facilitates inversion of the oil-in-water polymer emulsion when applied to a hydrocarbon composition at a temperature sufficiently high to destabilize the emulsion. These compositions are particularly useful as drag reducers for delivery to a subsea flowline via an umbilical line.

A polymer composition has been developed that provides low viscosity oil-in-water polymer emulsions that release the polymer in the emulsion at a faster rate and without an additional surfactant when the emulsion is added to a hydrocarbon stream. Use of a temperature-sensitive emulsifying surfactant facilitates inversion of the oil-in-water polymer emulsion when applied to a hydrocarbon composition at a temperature sufficiently high to destabilize the emulsion. These compositions are particularly useful as drag reducers for delivery to a subsea flowline via an umbilical line.